Laravel. Selecting the necessary data from the database, and placing it in a one-dimensional array. How can be done?

Question

Laravel

You can make a cycle, but I don’t want to (laziness, you know, you quickly get used to the good).
There is a code
return DB::table('category')->lists('name', 'id');
Works as it should. Returns a one-dimensional array

[
'0' => 'value1',
'1' => 'value2'
...
]

Only I need to add a where selection condition , and that would return exactly the same array.
I am writing a similar design.

DB::table('category')
  ->where('primary', 'yes')
  ->get();

It returns an array of categories as a list of stdClass, which is not acceptable.
In general, how to avoid writing a loop and use Laravel's built-in methods? This is not the first time I've hit my head on the ceiling in this place.
Thank you!

Answer 1

return DB::table('category')->where('primary', 'yes')->lists('name', 'id');

Answer 2

Make a model and use Eloquent - what does not allow?